Deformation behavior of Zr- and Ni-based bulk glassy alloys

Dmitri Valentinovich Louzguine, Yuqiao Zeng, Setyawan Albertus Deny Heri, Nobuyuki Nishiyama, Hidemi Kato, Junji Saida, Akihisa Inoue

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

This article presents a comparative study of the deformation-induced structural changes observed within a glassy phase in two different Zr- and Ni-based alloys. Ductile Zr65Al7.5Ni10Pd17.5 bulk glassy alloy, which exhibits dynamic nanocrystallization forming a crystalline cubic phase within shear bands on plastic deformation, is presumed to contain pre-existing nuclei. On the contrary, no obvious dynamic nanocrystallization is observed within the shear bands in the glassy phase of the Ni50Pd30P20 bulk alloy, which, however, contains clear medium-range order zones on the order of 1 nm in size in an as-solidified state. This alloy exhibits nucleation and growth-transformation behavior on heating. At the same time, clear nucleation and growth of the cubic Ni-based phase are observed near the microcrack area in the deformed sample. High energy released at the time of the microcrack propagation caused nanocrystallization and blockage of the crack-tip propagation.

Original languageEnglish
Pages (from-to)1087-1092
Number of pages6
JournalJournal of Materials Research
Volume22
Issue number4
DOIs
Publication statusPublished - 2007 Apr 1

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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